All indexes index news
Every official change we track across all indexes — S&P 500, Nasdaq-100, S&P 400 and 600, FTSE 100, DAX 40, Nikkei 225 and Hang Seng — newest first: the provider's announcement, the day it takes effect, and the press coverage around it. Use the index filter to narrow the feed; each entry links to the newsroom where the original release is published.
Official sources
S&P Dow Jones Indices
Index announcements for the S&P 500, MidCap 400 and SmallCap 600 — additions, deletions and rebalance results.
S&P Dow Jones Indices
Same announcement wire as the S&P 500; MidCap changes are usually paired with large-cap moves.
S&P Dow Jones Indices
SmallCap 600 additions and deletions, published on the S&P DJI announcement wire.
Nasdaq
Nasdaq press releases, including the annual reconstitution and intra-year Nasdaq-100 replacements.
FTSE Russell
FTSE Russell index notices with quarterly review results for the FTSE 100 and 250.
STOXX / Deutsche Börse
STOXX press releases covering DAX semi-annual reviews and fast-entry decisions.
Nikkei Inc.
Nikkei index news, including the annual October review and extraordinary replacements.
Hang Seng Indexes
Hang Seng Indexes announcements for the quarterly review of the HSI and its sub-indexes.
- Sep 4, 2026EffectiveNasdaq-100
Nasdaq-100: RBLX inclusion effective
Roblox entered the Nasdaq-100 after the close on Sep 4, 2026, forcing every tracking fund to hold it.
- Aug 20, 2026AnnouncementS&P MidCap 400
S&P MidCap 400: Sun Communities (SUI) to join
S&P Dow Jones Indices announced on Aug 20, 2026 that Sun Communities will join the S&P MidCap 400, replacing Webster Bank. Effective after the close on Aug 20, 2026.
- Aug 20, 2026EffectiveS&P MidCap 400
S&P MidCap 400: SUI inclusion effective
Sun Communities entered the S&P MidCap 400 after the close on Aug 20, 2026, forcing every tracking fund to hold it.
- Aug 18, 2026AnnouncementS&P 500
S&P 500: Reddit (RDDT) to join
S&P Dow Jones Indices announced on Aug 18, 2026 that Reddit will join the S&P 500, replacing AvalonBay Communities. Effective after the close on Aug 18, 2026.
- Aug 18, 2026EffectiveS&P 500
S&P 500: RDDT inclusion effective
Reddit entered the S&P 500 after the close on Aug 18, 2026, forcing every tracking fund to hold it.
- Aug 14, 2026AnnouncementNasdaq-100
Nasdaq-100: Roblox (RBLX) to join
Nasdaq announced on Aug 14, 2026 that Roblox will join the Nasdaq-100, replacing Paccar. Effective after the close on Sep 4, 2026.
- Aug 5, 2026AnnouncementS&P 500
S&P 500: Ferguson Enterprises (FERG) to join
S&P Dow Jones Indices announced on Aug 5, 2026 that Ferguson Enterprises will join the S&P 500, replacing Electronic Arts. Effective after the close on Aug 5, 2026.
- Aug 5, 2026EffectiveS&P 500
S&P 500: FERG inclusion effective
Ferguson Enterprises entered the S&P 500 after the close on Aug 5, 2026, forcing every tracking fund to hold it.
- Aug 4, 2026AnnouncementS&P SmallCap 600
S&P SmallCap 600: ADI Global Distribution (ADIG) to join
S&P Dow Jones Indices announced on Aug 4, 2026 that ADI Global Distribution will join the S&P SmallCap 600, replacing Hertz Global Holdings. Effective after the close on Aug 4, 2026.
- Aug 4, 2026EffectiveS&P SmallCap 600
S&P SmallCap 600: ADIG inclusion effective
ADI Global Distribution entered the S&P SmallCap 600 after the close on Aug 4, 2026, forcing every tracking fund to hold it.
- Aug 3, 2026AnnouncementS&P SmallCap 600
S&P SmallCap 600: Five9 (FIVN) to join
S&P Dow Jones Indices announced on Aug 3, 2026 that Five9 will join the S&P SmallCap 600, replacing Two Harbors Investment. Effective after the close on Aug 3, 2026.
- Aug 3, 2026EffectiveS&P SmallCap 600
S&P SmallCap 600: FIVN inclusion effective
Five9 entered the S&P SmallCap 600 after the close on Aug 3, 2026, forcing every tracking fund to hold it.
- Jul 31, 2026PressS&P 500
Live Markets: Who's next for the S&P 500? The clock is ticking
Reuters rounds up the names traders are positioning in as the next S&P DJI announcement window approaches.
- Jul 27, 2026AnnouncementS&P SmallCap 600
S&P SmallCap 600: V2X, Inc. (VVX) to join
S&P Dow Jones Indices announced on Jul 27, 2026 that V2X, Inc. will join the S&P SmallCap 600, replacing Avanos Medical. Effective after the close on Jul 27, 2026.
- Jul 27, 2026EffectiveS&P SmallCap 600
S&P SmallCap 600: VVX inclusion effective
V2X, Inc. entered the S&P SmallCap 600 after the close on Jul 27, 2026, forcing every tracking fund to hold it.
- Jul 24, 2026AnnouncementS&P MidCap 400
S&P MidCap 400: Krystal Biotech (KRYS) to join
S&P Dow Jones Indices announced on Jul 24, 2026 that Krystal Biotech will join the S&P MidCap 400, replacing Taylor Morrison. Effective after the close on Jul 24, 2026.
- Jul 24, 2026EffectiveS&P MidCap 400
S&P MidCap 400: KRYS inclusion effective
Krystal Biotech entered the S&P MidCap 400 after the close on Jul 24, 2026, forcing every tracking fund to hold it.
- Jul 24, 2026AnnouncementS&P SmallCap 600
S&P SmallCap 600: Tutor Perini (TPC) to join
S&P Dow Jones Indices announced on Jul 24, 2026 that Tutor Perini will join the S&P SmallCap 600, replacing Krystal Biotech. Effective after the close on Jul 24, 2026.
- Jul 24, 2026EffectiveS&P SmallCap 600
S&P SmallCap 600: TPC inclusion effective
Tutor Perini entered the S&P SmallCap 600 after the close on Jul 24, 2026, forcing every tracking fund to hold it.
- Jul 22, 2026AnnouncementS&P MidCap 400
S&P MidCap 400: Molina Healthcare (MOH) to join
S&P Dow Jones Indices announced on Jul 22, 2026 that Molina Healthcare will join the S&P MidCap 400, replacing National Storage Affiliates Trust. Effective after the close on Jul 22, 2026.
- Jul 22, 2026EffectiveS&P MidCap 400
S&P MidCap 400: MOH inclusion effective
Molina Healthcare entered the S&P MidCap 400 after the close on Jul 22, 2026, forcing every tracking fund to hold it.
- Jul 22, 2026AnnouncementS&P SmallCap 600
S&P SmallCap 600: Construction Partners (ROAD) to join
S&P Dow Jones Indices announced on Jul 22, 2026 that Construction Partners will join the S&P SmallCap 600, replacing Molina Healthcare. Effective after the close on Jul 22, 2026.
- Jul 22, 2026EffectiveS&P SmallCap 600
S&P SmallCap 600: ROAD inclusion effective
Construction Partners entered the S&P SmallCap 600 after the close on Jul 22, 2026, forcing every tracking fund to hold it.
- Jul 17, 2026AnnouncementS&P MidCap 400
S&P MidCap 400: BrightSpring Health Services (BTSG) to join
S&P Dow Jones Indices announced on Jul 17, 2026 that BrightSpring Health Services will join the S&P MidCap 400, replacing Chart Industries. Effective after the close on Jul 17, 2026.
- Jul 17, 2026EffectiveS&P MidCap 400
S&P MidCap 400: BTSG inclusion effective
BrightSpring Health Services entered the S&P MidCap 400 after the close on Jul 17, 2026, forcing every tracking fund to hold it.
- Jul 17, 2026AnnouncementS&P SmallCap 600
S&P SmallCap 600: Karman Holdings (KRMN) to join
S&P Dow Jones Indices announced on Jul 17, 2026 that Karman Holdings will join the S&P SmallCap 600, replacing BrightSpring Health Services. Effective after the close on Jul 17, 2026.
- Jul 17, 2026EffectiveS&P SmallCap 600
S&P SmallCap 600: KRMN inclusion effective
Karman Holdings entered the S&P SmallCap 600 after the close on Jul 17, 2026, forcing every tracking fund to hold it.
- Jul 15, 2026AnnouncementS&P SmallCap 600
S&P SmallCap 600: Solaris Energy Infrastructure (SEI) to join
S&P Dow Jones Indices announced on Jul 15, 2026 that Solaris Energy Infrastructure will join the S&P SmallCap 600, replacing Catalyst Pharmaceuticals. Effective after the close on Jul 15, 2026.
- Jul 15, 2026EffectiveS&P SmallCap 600
S&P SmallCap 600: SEI inclusion effective
Solaris Energy Infrastructure entered the S&P SmallCap 600 after the close on Jul 15, 2026, forcing every tracking fund to hold it.
- Jul 13, 2026PressS&P 500
These two stocks could soon be added to the S&P 500, says KBW
KBW's index desk flags two names it believes are closest to clearing the S&P 500 eligibility bar ahead of the September rebalance.
- Jul 8, 2026AnnouncementS&P SmallCap 600
S&P SmallCap 600: Centrus Energy (LEU) to join
S&P Dow Jones Indices announced on Jul 8, 2026 that Centrus Energy will join the S&P SmallCap 600, replacing Whitestone REIT. Effective after the close on Jul 8, 2026.
- Jul 8, 2026EffectiveS&P SmallCap 600
S&P SmallCap 600: LEU inclusion effective
Centrus Energy entered the S&P SmallCap 600 after the close on Jul 8, 2026, forcing every tracking fund to hold it.
- Jul 8, 2026AnnouncementS&P SmallCap 600
S&P SmallCap 600: Midera Food Processing (MFP) to join
S&P Dow Jones Indices announced on Jul 8, 2026 that Midera Food Processing will join the S&P SmallCap 600, replacing Redwood Trust. Effective after the close on Jul 8, 2026.
- Jul 8, 2026EffectiveS&P SmallCap 600
S&P SmallCap 600: MFP inclusion effective
Midera Food Processing entered the S&P SmallCap 600 after the close on Jul 8, 2026, forcing every tracking fund to hold it.
- Jul 6, 2026AnnouncementS&P MidCap 400
S&P MidCap 400: Allison Transmission (ALSN) to join
S&P Dow Jones Indices announced on Jul 6, 2026 that Allison Transmission will join the S&P MidCap 400, replacing Goodyear Tire & Rubber. Effective after the close on Jul 6, 2026.
- Jul 6, 2026EffectiveS&P MidCap 400
S&P MidCap 400: ALSN inclusion effective
Allison Transmission entered the S&P MidCap 400 after the close on Jul 6, 2026, forcing every tracking fund to hold it.
- Jul 6, 2026AnnouncementS&P SmallCap 600
S&P SmallCap 600: Goodyear Tire and Rubber Company (GT) to join
S&P Dow Jones Indices announced on Jul 6, 2026 that Goodyear Tire and Rubber Company will join the S&P SmallCap 600, replacing Stellar Bancorp. Effective after the close on Jul 6, 2026.
- Jul 6, 2026EffectiveS&P SmallCap 600
S&P SmallCap 600: GT inclusion effective
Goodyear Tire and Rubber Company entered the S&P SmallCap 600 after the close on Jul 6, 2026, forcing every tracking fund to hold it.
- Jul 1, 2026AnnouncementNasdaq-100
Nasdaq-100: SpaceX (SPCX) to join
Nasdaq announced on Jul 1, 2026 that SpaceX will join the Nasdaq-100, replacing . Effective after the close on Jul 1, 2026.
- Jul 1, 2026EffectiveNasdaq-100
Nasdaq-100: SPCX inclusion effective
SpaceX entered the Nasdaq-100 after the close on Jul 1, 2026, forcing every tracking fund to hold it.
- Jul 1, 2026AnnouncementS&P MidCap 400
S&P MidCap 400: Toast, Inc. (TOST) to join
S&P Dow Jones Indices announced on Jul 1, 2026 that Toast, Inc. will join the S&P MidCap 400, replacing TopBuild Corp.. Effective after the close on Jul 1, 2026.
- Jul 1, 2026EffectiveS&P MidCap 400
S&P MidCap 400: TOST inclusion effective
Toast, Inc. entered the S&P MidCap 400 after the close on Jul 1, 2026, forcing every tracking fund to hold it.
- Jul 1, 2026AnnouncementS&P MidCap 400
S&P MidCap 400: IES Holdings (IESC) to join
S&P Dow Jones Indices announced on Jul 1, 2026 that IES Holdings will join the S&P MidCap 400, replacing Janus Henderson. Effective after the close on Jul 1, 2026.
- Jul 1, 2026EffectiveS&P MidCap 400
S&P MidCap 400: IESC inclusion effective
IES Holdings entered the S&P MidCap 400 after the close on Jul 1, 2026, forcing every tracking fund to hold it.
- Jul 1, 2026AnnouncementS&P SmallCap 600
S&P SmallCap 600: National Health Investors (NHI) to join
S&P Dow Jones Indices announced on Jul 1, 2026 that National Health Investors will join the S&P SmallCap 600, replacing Apollo Commercial Real Estate Finance. Effective after the close on Jul 1, 2026.
- Jul 1, 2026EffectiveS&P SmallCap 600
S&P SmallCap 600: NHI inclusion effective
National Health Investors entered the S&P SmallCap 600 after the close on Jul 1, 2026, forcing every tracking fund to hold it.
- Jul 1, 2026AnnouncementS&P SmallCap 600
S&P SmallCap 600: Conagra Brands (CAG) to join
S&P Dow Jones Indices announced on Jul 1, 2026 that Conagra Brands will join the S&P SmallCap 600, replacing Grid Dynamics Holdings. Effective after the close on Jul 1, 2026.
- Jul 1, 2026EffectiveS&P SmallCap 600
S&P SmallCap 600: CAG inclusion effective
Conagra Brands entered the S&P SmallCap 600 after the close on Jul 1, 2026, forcing every tracking fund to hold it.
- Jul 1, 2026AnnouncementS&P SmallCap 600
S&P SmallCap 600: Mobility Global (MBGL) to join
S&P Dow Jones Indices announced on Jul 1, 2026 that Mobility Global will join the S&P SmallCap 600, replacing Core Laboratories. Effective after the close on Jul 1, 2026.
- Jul 1, 2026EffectiveS&P SmallCap 600
S&P SmallCap 600: MBGL inclusion effective
Mobility Global entered the S&P SmallCap 600 after the close on Jul 1, 2026, forcing every tracking fund to hold it.
- Jul 1, 2026AnnouncementS&P SmallCap 600
S&P SmallCap 600: Gulfport Energy (GPOR) to join
S&P Dow Jones Indices announced on Jul 1, 2026 that Gulfport Energy will join the S&P SmallCap 600, replacing Select Medical. Effective after the close on Jul 1, 2026.
- Jul 1, 2026EffectiveS&P SmallCap 600
S&P SmallCap 600: GPOR inclusion effective
Gulfport Energy entered the S&P SmallCap 600 after the close on Jul 1, 2026, forcing every tracking fund to hold it.
- Jun 29, 2026AnnouncementS&P 500
S&P 500: Honeywell Aerospace (HONA) to join
S&P Dow Jones Indices announced on Jun 29, 2026 that Honeywell Aerospace will join the S&P 500, replacing . Effective after the close on Jun 29, 2026.
- Jun 29, 2026EffectiveS&P 500
S&P 500: HONA inclusion effective
Honeywell Aerospace entered the S&P 500 after the close on Jun 29, 2026, forcing every tracking fund to hold it.
- Jun 29, 2026AnnouncementNasdaq-100
Nasdaq-100: Honeywell Aerospace (HONA) to join
Nasdaq announced on Jun 29, 2026 that Honeywell Aerospace will join the Nasdaq-100, replacing . Effective after the close on Jun 29, 2026.
- Jun 29, 2026EffectiveNasdaq-100
Nasdaq-100: HONA inclusion effective
Honeywell Aerospace entered the Nasdaq-100 after the close on Jun 29, 2026, forcing every tracking fund to hold it.
- Jun 29, 2026AnnouncementS&P SmallCap 600
S&P SmallCap 600: NETSTREIT (NTST) to join
S&P Dow Jones Indices announced on Jun 29, 2026 that NETSTREIT will join the S&P SmallCap 600, replacing ProAssurance. Effective after the close on Jun 29, 2026.
- Jun 29, 2026EffectiveS&P SmallCap 600
S&P SmallCap 600: NTST inclusion effective
NETSTREIT entered the S&P SmallCap 600 after the close on Jun 29, 2026, forcing every tracking fund to hold it.
- Jun 29, 2026PressS&P 500
SoFi Has Quietly Met the Bar for S&P 500 Inclusion
Argues SoFi now satisfies the index's profitability and size criteria after missing the June reshuffle, and sizes up what inclusion flows could mean for the stock.
- Jun 22, 2026AnnouncementS&P 500
S&P 500: Flex Ltd. (FLEX) to join
S&P Dow Jones Indices announced on Jun 22, 2026 that Flex Ltd. will join the S&P 500, replacing Campbell's. Effective after the close on Jun 22, 2026.
- Jun 22, 2026EffectiveS&P 500
S&P 500: FLEX inclusion effective
Flex Ltd. entered the S&P 500 after the close on Jun 22, 2026, forcing every tracking fund to hold it.
- Jun 22, 2026AnnouncementS&P 500
S&P 500: Marvell Technology (MRVL) to join
S&P Dow Jones Indices announced on Jun 22, 2026 that Marvell Technology will join the S&P 500, replacing Pool Corporation. Effective after the close on Jun 22, 2026.
- Jun 22, 2026EffectiveS&P 500
S&P 500: MRVL inclusion effective
Marvell Technology entered the S&P 500 after the close on Jun 22, 2026, forcing every tracking fund to hold it.
- Jun 22, 2026AnnouncementNasdaq-100
Nasdaq-100: Rocket Lab (RKLB) to join
Nasdaq announced on Jun 22, 2026 that Rocket Lab will join the Nasdaq-100, replacing Verisk Analytics. Effective after the close on Jun 22, 2026.
- Jun 22, 2026EffectiveNasdaq-100
Nasdaq-100: RKLB inclusion effective
Rocket Lab entered the Nasdaq-100 after the close on Jun 22, 2026, forcing every tracking fund to hold it.
- Jun 22, 2026AnnouncementNasdaq-100
Nasdaq-100: Teradyne (TER) to join
Nasdaq announced on Jun 22, 2026 that Teradyne will join the Nasdaq-100, replacing Zscaler. Effective after the close on Jun 22, 2026.
- Jun 22, 2026EffectiveNasdaq-100
Nasdaq-100: TER inclusion effective
Teradyne entered the Nasdaq-100 after the close on Jun 22, 2026, forcing every tracking fund to hold it.
- Jun 22, 2026AnnouncementNasdaq-100
Nasdaq-100: Nebius Group (NBIS) to join
Nasdaq announced on Jun 22, 2026 that Nebius Group will join the Nasdaq-100, replacing Insmed Incorporated. Effective after the close on Jun 22, 2026.
- Jun 22, 2026EffectiveNasdaq-100
Nasdaq-100: NBIS inclusion effective
Nebius Group entered the Nasdaq-100 after the close on Jun 22, 2026, forcing every tracking fund to hold it.
- Jun 22, 2026AnnouncementNasdaq-100
Nasdaq-100: Astera Labs (ALAB) to join
Nasdaq announced on Jun 22, 2026 that Astera Labs will join the Nasdaq-100, replacing Charter Communications. Effective after the close on Jun 22, 2026.
- Jun 22, 2026EffectiveNasdaq-100
Nasdaq-100: ALAB inclusion effective
Astera Labs entered the Nasdaq-100 after the close on Jun 22, 2026, forcing every tracking fund to hold it.
- Jun 22, 2026EffectiveNasdaq-100
Nasdaq-100: SNOW inclusion effective
Snowflake entered the Nasdaq-100 after the close on Jun 22, 2026, forcing every tracking fund to hold it.
- Jun 22, 2026AnnouncementS&P MidCap 400
S&P MidCap 400: Roku, Inc. (ROKU) to join
S&P Dow Jones Indices announced on Jun 22, 2026 that Roku, Inc. will join the S&P MidCap 400, replacing Flex Ltd.. Effective after the close on Jun 22, 2026.
- Jun 22, 2026EffectiveS&P MidCap 400
S&P MidCap 400: ROKU inclusion effective
Roku, Inc. entered the S&P MidCap 400 after the close on Jun 22, 2026, forcing every tracking fund to hold it.
- Jun 22, 2026AnnouncementS&P MidCap 400
S&P MidCap 400: Semtech (SMTC) to join
S&P Dow Jones Indices announced on Jun 22, 2026 that Semtech will join the S&P MidCap 400, replacing Coty. Effective after the close on Jun 22, 2026.
- Jun 22, 2026EffectiveS&P MidCap 400
S&P MidCap 400: SMTC inclusion effective
Semtech entered the S&P MidCap 400 after the close on Jun 22, 2026, forcing every tracking fund to hold it.
- Jun 22, 2026AnnouncementS&P MidCap 400
S&P MidCap 400: Viavi Solutions (VIAV) to join
S&P Dow Jones Indices announced on Jun 22, 2026 that Viavi Solutions will join the S&P MidCap 400, replacing Blackbaud. Effective after the close on Jun 22, 2026.
- Jun 22, 2026EffectiveS&P MidCap 400
S&P MidCap 400: VIAV inclusion effective
Viavi Solutions entered the S&P MidCap 400 after the close on Jun 22, 2026, forcing every tracking fund to hold it.
- Jun 22, 2026AnnouncementS&P MidCap 400
S&P MidCap 400: Sanmina Corporation (SANM) to join
S&P Dow Jones Indices announced on Jun 22, 2026 that Sanmina Corporation will join the S&P MidCap 400, replacing Concentrix. Effective after the close on Jun 22, 2026.
- Jun 22, 2026EffectiveS&P MidCap 400
S&P MidCap 400: SANM inclusion effective
Sanmina Corporation entered the S&P MidCap 400 after the close on Jun 22, 2026, forcing every tracking fund to hold it.
Announcement and effective dates come from the index providers listed above; press items link to their publisher. Always confirm against the original release before trading — nothing here is investment advice.